The Project NICAMPD at JINR Dubna

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The Project NICA/MPD at JINR (Dubna) Search for
the Mixed Phase of Strongly Interacting Matter
at Nuclotron-based Ion Collider FAcility
A. N. Sisakian for NICA collaboration
NICA
TOF
Phase trajectories in the phase diagram
calculated within the 3-fluid hydrodynamic model
for central AuAu collisions at different
energies (Yu. Ivanov V.N. Russkikh, V.D. Toneev,
2005 A.N. Sissakian, A.S. Sorin, M.K.
Suleymanov, V.D. Toneev, G.M. Zinovjev, 2005,
2006). Freeze-out curve is shown by dots, the
shaded region is a mixed phase for baryon and
strange conserved charges. For Elab 30 AGeV
(?sNN 8 GeV) the trajectory goes near the
critical end-point. Points with numbers indicate
the time of the system evolution
(1 fm/c 3.310-24 sec)
MPD for the Mixed Phase experiment The
experimental set-up of proposed MPD has to
perform tracking of high multiplicity events and
particle identification. The tracking system,
both the vertex tracker based on silicon strip
detectors and Central Tracking System based on
gaseous tracking devices. These detectors are
optimized for determination of the primary and
secondary vertices and for precise tracking of
low-momentum particles. All tracking detectors
(SVS, CTS and FTS) are situated in the magnetic
field of 1 T which is parallel to a beam
direction. The detectors record the tracks of
charged particles, measure their momenta and
identify particles by measuring their ionization
energy loss (dE/dx) with a good resolution. The
Time Projection Chamber is an appropriate
detector for reconstruction of events with high
density tracks. For identification of secondary
particles it is proposed to use Time of Flight
Detectors. The Time of Flight array provides
pion, kaon and proton identification.
The Project Milestones Stage 1 years 2007
2008 - Development of the Nuclotron
facility - Preparation of Technical
Design Report - Start prototyping of the
MPD and NICA elements Stage 2 years 2008
2011 - Design and Construction of NICA
and MPD detector Stage 3 years 2011 2012
- Assembling Stage 4 year 2013
- Commissioning